Thttrn



March 18 1924.

J. SCHNEIDER ET AL INTERRUPTER IN IGNITION APPARATUS FOR INTERNAL COMBUSTION ENGINES Filed Au 22, 1919 Fig.3

Patented M r. 18, 1924.

UNITED STATES.

PATENT OFFICE.

JACQUB EB AND FBEDEBIC DILLON, OI SOLOTHUBN, AND ERNST BURLI- mar, 01 ZUCH'WIL, SWITZMD, ASSIGNOBS TO THE rum SCINTILLA, SOLO- THUBN,.-

mrmnm m Iexmon mm'rus roamrmmaL-conumon mmmm uses am! s m as, 1910. Serial llo. $10,230.

To all whom it nwy'corwem:

, Be it known that we, Jacques. ScHNnmm, a citizen of the Swiss Republic, residing at Solothurn, Switzerland, Fnnnanrc BILLON,

a citizen of the Swiss Republic, residing at Solothurn, Switzerland, and ERNST Himm- MANN, a citizen of the Swiss Republic, residing at Zuchwil (Canton of Solothurn),

Switzerland, have invented certain new and i0 useful Improvements in Interrupters in Ignition Apparatus for Internal-Combustion Engines, of-which the following is a specification.

This invention provides an improved construction of the interrupter in ignition apparatus for internal combustion engines, which allows of employing the improved interrupter for both directions of rotation in the 'rimnin'g of the ignition apparatus 10 without having to replace any parts by others. I

In order to effect this parts of the 1mproved interrupter including the main supporting casing, the insulated fixed contact holder, the cam plate and the stub axle on .which the movable interrupter lever rocks are made s metrical to a plane passing vertically t rough the axis of rotation, whilst the interrupter lever with its spring,

5 ring fixing screw and both fixed and movable contacts are made symmetrical to .a vertical plane at right angles to theefirst mentioned plane.

The accom anying drawings illustrate-a constructions example of the improved in- 4 the arrangement for running in the left hand direction, and Fig. 3 is a planof the interrupter contacts.

' As shown, the cam plate '6, the

casing c with the contact holder d for carrymg the stationary interrupter' contact h, and the stub axle e for the interrupter lever are made symmetrical to the vertical plane X passing through the axis a of the ap paratus, whilst the interrupter lever f with the movable contact g, the stationary contact h and the r' i, are made symmetrical to the plane shown in Fi 3. The contactholder d is formed with ugsk on each side and is insulated from the main casing 0 by the non-conducting layer m. The casing c i provided on both sides with screw-threaded holes for the attachment of the spring ao What we claim is A circuit breaker for the primary winding of a magneto arranged to allow of operation in both directions of rotation, including a main supporting case symmetrical about,

a vertical plane, a rotary cam adapted to rockjapivoted lever carryin a contact, two symmetrically disposed seatings carried on said main case and insulated therefrom, a second contact adapted to be fitted to either of said seatings at will and coacting with the first mentioned contact in such a manner that the point of contact; is in a definite position in the said vertical plane for both directions of rotation, a spring attached at I one end to said pivoted lever and at its other end to one of a pair of symmetrical seatin onthe main supporti case,- and a singe pivot on which the sai pivoted lever rocks for both directions 'of rotation of the cam, said pivot bei fixed to the main casing in the said vertica lane of symmetry.

In testimony w ereof we have signed our names to this specification.

JACQUES SCHNEIDER, ERNST HURLIMANN. FREDEBIC BILLON 

